Profile Volatile Compounds in Essential Oils on Different Parts of Cardamom with Antioxidant Activity

Amomum compactum Soland Ex. Maton from the Zingiberaceae, known as Java cardamom in Indonesia, is a valuable medicinal plant because of its bioactivity. This study aims to identify and evaluate the bioactive compounds and antioxidant activity of Java cardamom parts (leaves, stems, rhizomes, fruits (pods and seeds)) to explore their bioactivity values. GC-MS analysis was used to identify the bioactive compounds of Java cardamom parts in essential oils. Antioxidant activity was carried out by two methods: DPPH and FRAP. GC-MS analysis of four parts of the Java cardamom obtained 47 compounds as monoterpenes (33), sesquiterpenes (9), hydrocarbons (1), fatty alcohols (1), fatty acids (1), fatty acid esters (1), and diterpenoids (1). 1.8-Cineol is the most dominant secondary metabolite and is found in every part of Java cardamom essential oil, with the highest content produced in Java cardamom steam essential oil (50.78%), followed by Java cardamom fruits essential oil (45.59%). Furthermore, the activity of DPPH and FRAP ranged from 19.07 (leaves) – 27.38 (stems) and 93.43 (stems) – 115.99 (fruits) mol TEAC/g FW. The maximum antioxidant activity is produced in Java cardamom fruit essential oil. Thus, it can be used as a source of producing metabolites as antioxidants in the pharmaceutical industry.